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1993年河北省高阳县邢南乡李郎村省级农业劳模王万省承包了百亩棉田,在附近棉田纷纷遭受棉铃虫危害的情况下,他的棉花却枝繁叶茂,郁郁葱葱,这是为什么呢?原来他在种棉前认真总结了几年来的治虫经验,针对棉铃虫抗性增强的特点,果断停用了连年使用的菊酯类农药,选用了久效磷、甲胺磷和“消抗液”混合剂,增强了对抗性较强的棉铃虫的杀灭率(达到95%以上,幼虫5分钟死亡,老龄幼虫在20分钟内死亡),而一亩棉田费用仅为两元多。
In 1993, Hebei province Gaoyang County Xingnan Township Li Langcun provincial agricultural model worker Wang Wan contracted hundreds of acres of cotton fields, in the vicinity of the cotton fields have suffered cotton bollworm case, his cotton is lush, lush, which is Why? The original he carefully summed up before the cotton farming experience over the past few years, for bollworm resistance enhanced characteristics, decisive use of perennial use of pyrethroid pesticides, the selection of monocrotophos, methamidophos and “Anti-inflammatory fluid” mixture enhances the killing rate of the more resistant cotton bollworm (more than 95%, the larvae die for 5 minutes and the aged larvae die within 20 minutes), while the acre cotton field costs only two Yuan more.